Boat-builder&#39;s riveting-jack.



PATENTED JAN. 31, 1905. J. 1). MORLEY.

BOAIT BUILDERS EIVETING JACK. I

APPLICATION IJILED JUNE v21', 1904.

fUNITED STATES Patented January 31, 1905.

I PATENT OFFICE.

J O SEPH D. MORLEY, OF LAKE PLEASANT, NEW YORK.

BOAT-B'UILDERS RlVETlNG-JACK.

SPECIFICATION forming part of Letters Patent No; 781,542, dated January31, 1905.

' Application filed June 21, 1904:. Serial No. 213,565.

T on whom; it may concern.-

Be it known that I, JOSEPH D. MORLEY, a citizen of the United States,and a resident of Lake Pleasant, Hamilton county, New York, haveinvented certain Improvements in Boat- Builders Riveting-Jacks, of whichthe following is a specification.

My invention consists-of a jack for use in making or repairingclinker-built boats-that is to say, boats in which the successivestrakes overlap and are riveted togetherthe object of my invention beingto permit of the setting and clenching of the rivets by one man who hasboth of his hands free for the purpose.

This object I attain in the manner hereinafter set forth, referencebeing had to the accompanying drawings, in which Figure 1 represents myimproved jack in position for use in clenching a rivet. Fig. 2 is asideelevation of the jack. Fig. 3 is an end elevation, showing the jackapplied to the boat, and Fig. 4 is anenlarged perspective view of one ofthe elements of the jack;

In building or repairing clinker-built boats two men are ordinarilyneeded, one to hammer the rivets and the other to hold the weightagainst which the rivets are clenched or upset, since the work cannot beeffectively done by one man manipulating a hammer with one hand andholding the weight with the other.

The object of my invention has been to provide a jack for properlysupporting in respect to the strakes of the boat the weight againstwhich the rivets are clenched, so that the man who is driving the rivetswill have both hands free.

The jack consists of a suitable vertical frame 1, having guides for arack-bar 2, which carries at its upper end a' pivoted and swinging head3, with projecting rib or flange 4 on its inner face for engaging withthe under edge of that strake of the boat which is to be riveted,and-thereby holding the head in proper position to upset or clench therivets driven through the overlapping strakesfrom the in side of theboat, the fact thatthe head is pivoted on the upper-end of the rack-bar2'- permitting it to assume any desired angle, and thus accord with thevarying angles assumed by the strakes in the diiferent portions of theboat. The rack-bar 2 is adjusted to different vertical positions bymeans of a sliding pawl 5, likewise vertically guided on the frame 1 andengaging at its upper end with the teeth of the rack-bar 2, with whichit is maintained in contact by means of aspring 6, lifting movementbeing imparted to the pawl by means of a treadle 7, hung to the lowerportion of the frame 1.

In order to render it unnecessary to constantly press with the foot uponthe treadle 7 during the time that the jack is in use and in order toprevent the pawl and rack-bar from falling, I provide a cam-lever 8,pivoted to the upper portion of the frame 1 and bearing against the backof the pawl 5, so that when the rack-bar has been lifted to the desiredheight the pawl can be acted upon by this camlever, so asv to jam itagainst the rack-bar, and thereby jam the latter in its guides withsufficient force to prevent it from falling. In order to maintain thehead 3 in close contact withthe strake which is being riveted intoplace, suitable means may be employed for anchoring the frame 1; but Iprefer to provide the rack-bar 2 with a projecting arm 9, against whichthe knee or other part of the person of the workman can be pressed withthe efiect of likewise pressing the head 3 toward and in contact withthe strake of the boat.

It will be evident that the device described provides means whereby thehead 3 can be pressed with sulficient force against the outer face of.any desired strake of the boat, thus leaving both hands of. the workmanfree to insort and drive the rivets whereby the successive strakes aresecured together.

Having thus described my invention, I claim and desire to secure byLetters Patent 1. A boat-builders riveting-jack consisting of asupporting-frame, a vertically-movable member mounted thereonand-provided with a head having a side bearing-face against which therivets can be clenched, substantially as specified. f

2. A boat-builders riveting-j aok consisting of a supporting-frame, avertically-movable member mounted thereon and provided with a headhaving a side bearing-face against which the rivets can be clenched, anda rib or shoulder substantially at a right angle to said clenching-face,substantially as specified.

3. A boat-builders riveting-jack consisting of a supporting-frame, avertically-movable member mounted thereon, a head pivoted thereto, andpresenting a side bearing-face against which the rivets can be clenched,substantially as specified.

4. A boat-builders riveting-jack consisting of a frame, having avertically-movable rackbar thereon, with head for hearing against thestrake to be riveted, a pawl for actuating said jack, and a cam-leverfor engaging said pawl, and locking the same and the rack-bar inadjusted position, substantially as specified.

5. A boat-builders riveting-jack consisting of a frame, avertically-adjustable bar supported thereby and having a head forbearing against the strake to be riveted, and an arm extending laterallywith respect to said bar through the medium of which pressure can beexerted laterally upon said head to press it against the strake,substantially as specified.

In testimony whereof I have signed my name tothis specification in thepresence of two subscribing witnesses.

JOSEPH I). MORLEY.

Witnesses:

JOHN OSTRANDER, EDGAR CALL.

